Half to joseph w



name STATES:

ATsNT nron.

cnlnnnnsn. Yonneimn, or LonisviLnn, KENTUCKY, -ASSIGNOR or ONE- HALF r JOSEPH w. rownnn, on sans PLACE.

FIRE-ESCAPE.

SPECIFICATION forming part of Letters Patent No. 288,149, dated November 6, 1883;

' Application filed August 14, 1883. (No model.)

To all whom it may concern/.-

Be it known that I, O. A. YOUNGMAN, a citizen of the United States of America, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Fire-Escapes; and

marked thereon, which form a part of this specification.

Figure l of the drawings is a representation of this invention, and is a perspective View.

Fig. 2 is a longitudinal section.

This invention has relation to fire-escapes; and it consists in the construction and novel arrangement of devices, as will be hereinafter fully described, and particularly pointed out in the claim appended.

The object of the invention is to lower any desired weight within the capacity of the fireescape at an almost uniform rate of speed, to be known before the descent is attempted, so

that a person or persons may be lowered from alsoin the uprights c c, as shown.

b is provided at one end with thebrake-wheel d, which has a double-inclined groove, 6, in its periphery, into which a brake-shoe, f, fits, having a face to fit the groove 6, thereby giving a broad bearing-surface for the brake-shoe j, which is secured ont-he upper face of abrakelever, g, at one end. The brake-lever g is fulcrumed in a slot in the upright c, and its power 7 end engages the shaft h of the governor after passing through a slot, 2?, in the governorframe. I i

The inner end of the shaft 1) is provided with a gear-wheel, k, which meshes with a pinion,

it, upon a horizontal shaft, Z, having its bear- This shaft ings in the upright c, and in the inner wall, m, of the governor-frame. The shaft Zcarries at its inner end a miter gear-wheel, n, which engages a miter gear-wheel, 0, on the lower end of the hollow shaft 19, which works in the sleeve q on the governor-fran1e;

The governor-arms 0' pass through slots '1" at opposite sides in the governor-head, and are pivoted to the ends of a cross-arm, s, in the head of thesleeve q, and rigidly secured to the vertical shaft or spindle 71, so that when the governor isoperated thegovernor-balls will raise the arms and depress the shaft h, which, bearing on the brake-lever, will cause the brak e-shoe to bear against the brake-wheel.

a designates a spool on the shaft b, upon which the rope a is wound, and passes under and over a pulley, 10, having a guard, 10, at

one end of the slotted bar '0, which is secured to the frame by a bolt and thumb-nut, o 0 so that it canbeturned at right angles to the frame and secured in place thereon when the descent is tobe made. The end of this slotted bar '0 that is to be turned out of the window is also provided with a pulley, w, over which the rope runs.

A choke-brake, as, having acord,w, by which to apply the brake at any time during the descent of the person or persons at the end of the rope, is provided at the projecting end of the bar 2), so that the descent may be stopped entirely by the occupant of the receptaclethat may be used at the end of the rope, if it is deemed necessary. After the parts have been adjusted so that the maximum speed desired is known, this speed cannot be noticeably increased or diminished during the descent un- The machines may be made either station- .ary or portable, and are cheap, simple, and

safe. 1

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-' less by applying the choke-brake, even if the IOC In a fire-escape, the combination, with the frame a and shaft 1), having the brake-wheel cl, with double-inclined peripheral groove 6, ning over the pulley w and 10 on-the slotted .the spool u, and the gear-wheel k, of the horibar 0, secured to the frame a, and having the zontal shaft 1, having the pinion 70 and miter choke-brake a: and operating-cord w, substangear-wheeln, the hollow shaft 1), having the tially as specified. A 5 miter-gear 0 at its lower end, and the slotted In testimony whereof Iaflix my signature in I 5 governor-head above the governor-arms 9", presence of two witnesses. working in the slots inthegovernor-head; and CHARLES A. YOUNGMAN. pivoted to the eross-arm s of the shaft h, the I Witnesses: lower end of which engages the brake-lever g, F. V. SIMMs,

10 carrying the brake-shoe f, and the rope u, run- XVARREN MITCHELL. 

